Hydraulic shock absorber



FIG. 1 is a top plan view of the hydraulic shock absorber embodying our inventive design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a right side elevation view thereof; and

FIG. 6 is a left side elevation view thereof. 

The ornamental design for a hydraulic shock absorber, as shown. 